Locomotive-arch



, ofthe-elimini I lsh.

BEST AVAlLABLE CGPY vsieri-z s PATENT OFFICE.

or CHICAGO, ILLINOIS, AssIGNoR 'ro UNIVERSAL ARCH y obigem, or. cHIcAoo, ILLINoIs, A conPonAmIoN or ILLINOIS.

To, may .content I 1t=1mQwn.thet-I, Quilmes E. Minnen, a. citizenojffthe United Sttes, and resident of Chicegon tina county .ofGqok and State of IllllQl'heyeinventedcertain new and usevfollorlig .isf a-specitication "Mynntention 'relates to locomotive arches particnlal. ..to agnovel arch brick. @ne4 -the of n iyf invention is to a' 'brick lconstructionl .which will neeefity -for rightand left lforaspa, Whether adapted to ilpbnrc'hwtiibes-orfon studs. This is rolnf'the' standpoint of both the and the user as will readily be 'ulgthergobjgectiisto provide in a. brick lSis-described, a locking debQfpQSitive and serve to movement in all di'- wern or burnt tothe minipartant-object is` to provide n constisictionfwhifeh'm service will avoid a of 'the arch or junction-of the bricks 'which wouldl proyideja channel .or runway for cinders. when the eli ine i's operating. The Creation of such ac el results in rapid abrasion of thearch at that point and The desired result is secured by reason 4of the fact that in my construction the joint is zig zag or staggered, the joint at no ont being longer than half thewidth of a brick.

From a producers standpoint my brick presents many advantages, not the least of vwhich is. the reduction of breakage loss in 'handling and shipping, this for thc reason Specication of Letters Patent.

riocoMo'rIvE-ARCH.

Patented Jan. 4. 1921.

,ppiieation med April 14, 1919. serial xo. 289,954.

stood by reference to the accompanying drawings, wherein:

Figure l is a transverse sectional view through a portion of a locomotive arch, the bricks composing the arch being formed in accordance with my invention;

Fig. 2 is a plan view of one of the bricks;

Fig. 3 is a similar view showing similar bricks adapted for employment in a longer span, a key-brick being employed;

Fig. 4 is a plan View ofthe key-l'nick;

Fig. 5 is a sectional view of a slightly modified arch brick construction and Fig. 6 is a fragmentary plan view showing the zigzag form of the joint between adjacent bricks. A

In the drawings it will be seen that the arch shown in Fig. l is supported on three ercn tubes l0, the bricks composing the a-rch being curved and being slightly thicker at their meeting edges than at their point. of engagement with the arch tubes. This provides for additional material at the point where the greatest wear or abrasion takes place, that is at the apex or high point oi' the arch; in other words the bricks are both curved and tapered.

The bricks l1, may be provided with ono. or more recesses 12 on their upper surfaces in order to lighten the same. The thinner end is vprovided with a socket or groove 1.3, adapted to fit the arch tube while the opposite end is shaped for interlocking engagement with a duplicate brick. The desired result is secured by so forming the interlocking ends of the bricks that each thereof shall have onehalf of its end shaped to provide a transverse diagonal plane surface 14 extending entirely across the brick, the other half of the end being formed to provide a transverse diagonal plane surface l5, the planes of the two surl'accs intersecting :it a point 16 midway between the top und hottom of the brick. the surfaces l-l., l5, forming approximately sumilenwntarv ang-.es with the upper or lower sulaces of the copcrating bricks. By reason of this arrangement the bricks are each provided with a relatively rn-.tssive triangular projection at each side at lthe top and bottoni of the brick, und each et these projections constitutes onehalf of the width of the brick which eliminates right and left-h md bricks in forming AvAaABL @8H an arch, the advantages of which have heretofore been pointed out.

In the construction of Fig. 3 the bricks 17, 18, are identical with those heretofore described. However, as the span between the arch tubes A19 is greater than in the illustration of Fig. l, I provide a key-brick 2O which 'may have parallel straight sides as shown, or may be curved; in any event the ends of the key-brick are identical with the ends of the arch bricks. This construction provides a self-supporting arch of considerably greater span than could otherwise be formed and the bricks comprising the span are securely inter-locked against movement in any direction.

In the construction of Fig, 5 the arch bricks are substantially the same those heretofore described except in that the plane surfaces 2l, 22, do not extend entirely across the width of the brick; near the ends the surfaces 21, 22, are caused to extend substantially parallel to the transverse axis of the brick. both halves of the ends of the brick and all the advantages heretofore pointed out are present There is the added' advantage, however, that the edge formed by the junc` tionof the outer surfaces and the surfaces 23 form a right angle whereas in the construction illustrated inthe preceding figures an acute angle is formed. The advantage is ,that `,there is less likelihood of breakage where .the angle is less acute.

The exact form of the brick ends need not be adhered t0 in order to secure advantageous results and modifications such as will readily occur to those skilled in the art and are considered to be within the spirit. of my invention.

I claim:

1. In a locomotive arch, thecombination of a lurality of duplicate bricks adapted to inter ook at their ends and form aA self-supporting arch, each brick having one-half of The surfaces 23 are duplicated in the upper surface of the brick, the planes of the end which is adapted to coperale with an adjacent brick provided with a transverse diagonal plane surface', the surface forming an acute angle with the upper surface of the brick, the other half of the said end being formed to provide a surface which forms an acute angle with the lower surface of the brick, the planes of the* two surfaces intersecting at a point midway between the top and bottom of the brick, substantially as described. z

2. In a locomotive arch, the combination of a plurality of bricks adapted to be interlocked in end to end relation, the ends of said bricks beingshaped to provide relatively massive projections, each projection constituting one-half of the end of the bricks, the end surfaces of the two projections being oppositely diagonally disposed to form supplementary angles with the upper surface of the brick, the planes of the' two diagonal surfaces intersectlng at a point substantially midway between the top and bottomof the brigk.l substantiall as described.. v

3. In a locomotive arh, the combination with supportsof a pair of upwardly and inwardlyinclined bricks resting on said supports and adapted to 'be brought into abutting engagement at their upper ends,

the abutting end of each Vbrick being shaped to provide relatively 'massive rojections, v

each Aprojection constituting one- 'alf of the endof the brick, the end, surfaces of the. two projections being oppositely diagonally, Y t

disposed to form supplementary angles w1 the two diagonal surfaces intersectin at a e brick, substantially as 'point substantially midway between t e top Witness:

T. D. Bernau, 

